tellurian1

[te-loo r-ee-uh n] /tɛˈlʊər i ən/
adjective
1.
of or characteristic of the earth or its inhabitants; terrestrial.
noun
2.
an inhabitant of the earth.
Origin
1840-50; < Latin tellūr- (stem of tellūs) earth + -ian

tellurian2

[te-loo r-ee-uh n] /tɛˈlʊər i ən/
noun
1.
tellurion.
British Dictionary definitions for tellurian

tellurian

/tɛˈlʊərɪən/
adjective
1.
of or relating to the earth
noun
2.
(esp in science fiction) an inhabitant of the earth
Word Origin
C19: from Latin tellūs the earth

tellurion

/tɛˈlʊərɪən/
noun
1.
an instrument that shows how day and night and the seasons result from the tilt of the earth, its rotation on its axis, and its revolution around the sun
Word Origin
C19: from Latin tellūs the earth
Word Origin and History for tellurian
adj.

"pertaining to the earth," 1846, from Latin tellus (genitive telluris) "earth," from PIE root *tel- "ground, floor" (cf. Lithuanian telinat "spread out, flat," Sanskrit talam "plain, sole of the foot," Old Church Slavonic tilo "floor," Greek telia "dice board," Old Irish talam "earth," Old Norse þilja "plank"). The chemical telluride is attested from 1849.